<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
Hi All,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
Naomi pointed out some discrepancies in the Hall D 0,0,0 point in Z in the survey spreadsheets over the years. From 2014 through 2020, all should read Z = 398.1386. After that, all should be 398.13902. The Hall was re-surveyed relative to the accelerator at
that time. I have updated the spreadsheets in the "O" drive. The update spreadsheets have "HD00 corrected" in the title.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
Cheers,<br>
</div>
<div class="elementToProof">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div id="Signature">
<div>
<div id="divtagdefaultwrapper" dir="ltr" style="font-size: 12pt; font-family: Calibri, Helvetica, sans-serif; color: rgb(0, 0, 0);">
<p style="margin-top:0; margin-bottom:0">Tim Whitlatch </p>
<p style="margin-top:0; margin-bottom:0">Hall D Engineer<br>
</p>
<p style="margin-top:0; margin-bottom:0">Jefferson Lab</p>
<p style="margin-top:0; margin-bottom:0">757-269-5087<br>
</p>
</div>
</div>
</div>
</div>
</body>
</html>